gdb/testsuite/gdb.tui/winheight.exp

   1 # Copyright 2019-2024 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Test the "winheight" command.
  17
  18 tuiterm_env
  19
  20 standard_testfile tui-layout.c
  21
  22 if {[build_executable "failed to prepare" ${testfile} ${srcfile}] == -1} {
  23     return -1
  24 }
  25
  26 Term::clean_restart 24 80 $testfile
  27 if {![Term::enter_tui]} {
  28     unsupported "TUI not supported"
  29     return
  30 }
  31
  32 Term::check_box "source box" 0 0 80 15
  33
  34 Term::command "winheight cmd +5"
  35 Term::check_box "smaller source box" 0 0 80 10
  36
  37 Term::command "winheight cmd -5"
  38 Term::check_box "larger source box" 0 0 80 15
  39
  40 Term::command "winheight src -5"
  41 Term::check_box "smaller source box again" 0 0 80 10
  42
  43 Term::command "winheight src +5"
  44 Term::check_box "larger source box again" 0 0 80 15
  45
  46 # Check that attempting a window to be too large gives an error.
  47 Term::command "winheight src 100"
  48 Term::check_box "source box has not changed" 0 0 80 15
  49 Term::check_region_contents "check error message about src size 100" 0 16 80 8 \
  50     [multi_line "$gdb_prompt winheight src 100\\s+" \
  51      "warning: Invalid window height specified\\s+" \
  52      "$gdb_prompt"]
  53
  54 # Check that incrementing to a size that is "too big" will trigger an
  55 # error, and that the window doesn't resize.
  56 Term::command "winheight src 20"
  57 Term::check_box "source box is at its max size" 0 0 80 20
  58 Term::command "winheight src +1"
  59 Term::check_box "source box is still at its max size" 0 0 80 20
  60 Term::check_region_contents "check error message about src +1" 0 21 80 3 \
  61     [multi_line "$gdb_prompt winheight src \\+1\\s+" \
  62      "warning: Invalid window height specified\\s+" \
  63      "$gdb_prompt"]
  64
  65 # Reset the cmd window to a sane size.
  66 Term::command "winheight cmd 8"
  67
  68 Term::command "layout regs"
  69 Term::check_box "register window" 0 0 80 8
  70 Term::check_box "source window" 0 7 80 8
  71
  72 Term::command "winheight cmd 10"
  73 Term::check_box "register window after resize" 0 0 80 7
  74 Term::check_box "source window after resize" 0 6 80 7
  75
  76 # At one point we had a bug where adjusting the winheight would result
  77 # in GDB keeping hold of duplicate window pointers, which it might
  78 # then try to delete when the layout was changed.  Running this test
  79 # under valgrind would expose that bug.
  80 Term::command "layout asm"
  81 Term::command "winheight cmd 8"
  82 Term::check_box "check for asm window" 0 0 80 15
  83
  84
  85 # Check what happens when we switch from src layout to split layout.
  86 # The interesting thing here is that the src layout has one flexible
  87 # window (the src), the status window, which is of fixed size, and the
  88 # cmd window, which tries to retain its size when a layout changes.
  89 #
  90 # In contrast, the split layout has both a src and asm window, plus
  91 # the same status and cmd windows.
  92 #
  93 # Of particular interest here is the first test, where we maximise the
  94 # cmd window before switching to split.  This requires gdb to realise
  95 # that it has to shrink the cmd window, even though this is something
  96 # gdb usually avoids doing.
  97 #
  98 # Each test here is a size for the src window in the 'src' layout.
  99 # The test then switches to the 'split' layout, and calculates the
 100 # expected window sizes.
 101 foreach_with_prefix cmd_size {20 12 5} {
 102     set src_size_before [expr 24 - ${cmd_size} - 1]
 103     set split_size [expr (24 - ${cmd_size}) / 2]
 104
 105     if { $split_size < 3 } {
 106         # The minimum window size is 3, so force that.
 107         set src_size_after 3
 108         set asm_size_after 3
 109     } elseif { [expr $split_size % 2] == 0 } {
 110         # The remaining space can be divided evenly between the two
 111         # windows.
 112         set src_size_after ${split_size}
 113         set asm_size_after ${split_size}
 114     } else {
 115         # The space can't be divided evenly, the asm window will get
 116         # the extra line.
 117         set src_size_after ${split_size}
 118         set asm_size_after [expr ${split_size} + 1]
 119     }
 120
 121     Term::command "layout src"
 122     Term::command "winheight cmd ${cmd_size}"
 123     Term::check_box "check for src window" 0 0 80 ${src_size_before}
 124
 125     # Both windows should be of equal size, which will be their minimum.
 126     Term::command "layout split"
 127     Term::check_box "check for src window in split" 0 0 80 ${src_size_after}
 128     Term::check_box "check for asm window in split" 0 [expr ${src_size_after} - 1] 80 ${asm_size_after}
 129 }